Compositional design of low carbon sulphuric acid dewpoint corrosion resistant steel and corresponding anticorrosive mechanism

被引：16
作者：
Wu, B. Y. [1 ]
Liang, W. [2 ]
Wang, A. H. [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
[2] Wuhan Iron & Steel Grp Corp, Ctr Res & Dev, Wuhan 430080, Peoples R China
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2013年 / 48卷 / 04期
关键词：
Low carbon steel; Sulphuric acid dewpoint corrosion; Immersing corrosion; Polarisation curve; Corrosion products; LOW-ALLOY STEELS; GAS DESULFURIZATION SYSTEM; FERRITIC STAINLESS-STEEL; BEHAVIOR; COPPER; ELEMENTS; CU; POLARIZATION; SURFACE;
D O I：
10.1179/1743278212Y.0000000071
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The optimal contents of C, S, Cu and Sb in a new low alloy steel for the purpose of improving the sulphuric acid dewpoint corrosion resistance were investigated by weight loss and potentiodynamic polarisation in 50 wt-% H2SO4 at 70 degrees C. The optimal elemental contents of C, S, Cu and Sb in the low carbon sulphuric acid dewpoint corrosion resistant steel (SADPS) are 0.09, 0.016, 0.3 and 0.09 respectively. The corrosive products of Fe-2(SO4)(3) and FeSO4 were found on the surface of plain low carbon steel while corrosive products of (Cu, Fe) SO4, FeSbO4, FeSb2O4, CuSbO4 and CuO were found on the surface of SADPS. Potentiodynamic polarisation test also revealed that the higher corrosion resistance of SADPS was due to inhibition of the cathodic reaction due to surface enrichment by the alloying elements.
引用
收藏
页码：313 / 320
页数：8
相关论文
共 25 条
  • [1] [Anonymous], 2004, G31 ASTM INT
  • [2] Anti-corrosion protection of chimneys and flue gas ducts
    Bordzilowski, J
    Darowicki, K
    [J]. ANTI-CORROSION METHODS AND MATERIALS, 1998, 45 (06) : 388 - +
  • [3] A new steel with good low-temperature sulfuric acid dew point corrosion resistance
    Cheng, X. Q.
    Sun, F. L.
    Lv, S. J.
    Li, X. G.
    [J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2012, 63 (07): : 598 - 606
  • [4] EFFECTS OF VANADIUM ON POLARIZATION OF 18-PERCENT CR FERRITIC STAINLESS-STEEL
    DAVIES, RD
    [J]. CORROSION, 1993, 49 (07) : 544 - 549
  • [5] The influence of copper and chromium on the semiconducting behaviour of passive films formed on weathering steels
    Guedes, I. C.
    Aoki, I. V.
    Carmezim, M. J.
    Montemor, M. F.
    Ferreira, M. G. S.
    Belo, M. Da Cunha
    [J]. THIN SOLID FILMS, 2006, 515 (04) : 2167 - 2172
  • [6] Han JH, 2009, J KOREAN INST MET MA, V47, P558
  • [7] ACCUMULATION OF COPPER LAYER ON A SURFACE IN THE ANODIC POLARIZATION OF STAINLESS-STEEL CONTAINING CU AT DIFFERENT TEMPERATURES
    HERMAS, AA
    OGURA, K
    ADACHI, T
    [J]. ELECTROCHIMICA ACTA, 1995, 40 (07) : 837 - 844
  • [8] Hernaire J, 2009, STUD U BABES-BOL CHE, V54, P29
  • [9] Corrosion behaviour of copper containing low alloy steels in sulphuric acid
    Hong, J. H.
    Lee, S. H.
    Kim, J. G.
    Yoon, J. B.
    [J]. CORROSION SCIENCE, 2012, 54 : 174 - 182
  • [10] Latest advances in the understanding of acid dewpoint corrosion: corrosion and stress corrosion cracking in combustion gas condensates
    Huijbregts, WMM
    Leferink, RGI
    [J]. ANTI-CORROSION METHODS AND MATERIALS, 2004, 51 (03) : 173 - 188
123